She cannot stand seeing that boy.
I think it is no use crying about your exam results now.
I had to put off shopping for a while.
He kept on asking me for my phone number.
4．以下动词后面可以接v-ing或to do，意思上几乎没有区别。Continue prefer begin hate like start
5．一些动词后面既可以接v-ing，也可以接to do，但意义和用法上有区别。在使用时要确保形式的正确。如，forget regret remember mean try go on
forget+ to do (事情还没做)
如：He forgot to close the door when he left.
Forget+ doing (事情已经做了)
如：I ll never forget winning my first gold medal.
第二单元
一 V-ing 充当形容词或副词
1．v-ing可作：
1）定语
v-ing 可以放在名词前，像形容词一样修饰名词。
如：This will have a lasting effect.
有时候会把一个副词放在v-ing前。
如：That was an extremely interesting speech.
v-ing 可以和副词或名词构成复合词。
如：The fast-growing economy has caused environmental problems.
A wood-burning stove is environmentally friendly.
v-ing 可以放在名词后，像定语从句一样修饰名词，v-ing还可以被改成定语从句。 如：people running these factories are very concerned about the environment.=
People who run these factories are very concerned about the environment.
2）表语
如：This destruction is frightening.
宾语补足语
如：We all found his argument convincing and interesting.
2．v-ing可放在stand, sit, lie 的后面，表示动作同时发生。
如：They stood talking to each other.=They stood when they were talking to each other.
3．v-ing有完成时态，如，having worked
如：Having worked side by side with many environmentalists, I know that a healthy environment and stable economy should be possible at the same time.
二V-ing 短语
v-ing短语可以单独使用，后面也可以接宾语或状语。
如：They sat there smiling.
They sat there smiling at each other.
1．v-ing短语可以表示：
1）时间
